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Michael Poulin works as an enterprise-level solution architect in the financial industry in the UK. He is a Sun Certified Architect for Java Technology, certified TOGAF Practitioner, and Licensed ZapThink SOA Architect. Michael specializes in distributed computing, SOA, and application security. 
At a glance the reuse of a service and entitlement to those service results have nothing in common. But on the second thought, the more a service gets reused the greater the chance of serving users with different access rights to the service results. We'll discuss two models of reuse a...
The main drivers for SOA-based architectures are to facilitate the manageable growth of large-scale enterprise systems, to facilitate Internet-scale provisioning and the use of services, and to reduce the cost of organization-to-organization cooperation - SOA RM
SOA RM: '...in SOA, services are the mechanism by which needs and capabilities are brought together' Recently OASIS voted the SOA Reference Model (SOA RM) into a standard. In spite of its high level of abstraction, this model emphasizes the business orientation of SOA.
In this article I'll share my experience in using the new features in Java 5 for solving an old industry problem, the problem of collecting constantly published financial data in reliable way. The business case example I'm going to discuss relates to the acquisition of some sort of mar...
(Found in a blog, 'Versioning is as inevitable as security.') SOA development practice isn't much different from other software development practices except for design and maintenance. Multiple self-containing and aggregated services that interact with others have their own lifecycle a...
What could be easier than to take your application, wrap it with a Web Service, announce it or register it in the UDDI and get a SOA Service? Even better - take a data warehouse, cover a SQL executing code with a Web Service and expose it to SOA, isn't it simple? This article is for th...
This article describes a workaround design that allows a Portal to survive if its resource starts hanging request threads. How frequently does your Portal experience user requests hanging in the resource? Not frequently, I hope. However, if this happens and the resource continues hangi...
This article describes two techniques that may be used for assured delivery of important data, specifically, audit data, in distributed systems. We will review design that leads from assured to guaranteed delivery. This task gets more and more important in light of modern global operat...
The requirements for different user-facing applications frequently say something like: 'User has to see/read/be shown only funds/records/itineraries/policies he or she is entitled to.' Permissions in these cases usually depend on multiple factors related to the user profile (job role, ...
Application architects have heard about the increased importance of security, but in many cases they really don't know how to approach this issue. In this article, I'll share my experience and define a few basic steps and checkpoints for building application architecture with security ...
Crystal Reports for BEA WebLogic Workshop integrates Crystal Reports' Java report processing and rendering capabilities with BEA WebLogic Workshop's JavaServer Page ...